<!DOCTYPE html>
<html>
<head>
	<title>本地存储</title>
	<script >
	function clickCounter() {
    if(typeof(Storage) !== "undefined") {
        if (sessionStorage.clickcount) {
            sessionStorage.clickcount = Number(sessionStorage.clickcount)+1;
        } else {
            sessionStorage.clickcount = 1;
        }
        document.getElementById("result").innerHTML = "在本 session 中，您已经点击这个按钮 " + sessionStorage.clickcount + " 次。";
    } else {
        document.getElementById("result").innerHTML = "抱歉！您的浏览器不支持 Web Storage ...";
    }
}

	</script>
</head>
<body>
<p><button onclick="clickCounter()" type="button">请点击这里</button></p>
<div id="result"></div>
<p>请点击按钮使计数器递增。</p>
<p>请关闭浏览器或标签页，然后再试一次，计数器会重置。</p>
</body>
</html>